MB3 91a: Clasps, Torn Shoes, False Teeth on Shabbos (303:9-15)

Can a woman wear a signet ring on Shabbos? What jewelry can be worn on Shabbos?

A woman cannot wear outside on Shabbos a shoe torn on top or a brand new shoe that has never been worn.

Wearing additional strands of hair on Shabbos (as opposed to a wig).